#$%^&*AU2020205345A120200806.pdf#####NOVEL ALKYNYL-SUBSTITUTED 3-PHENYLPYRROLIDINE-2,4-DIONES AND USE THEREOF AS HERBICIDES Abstract The present invention relates to novel effective alkynyl-substituted 3-phenylpyrrolidine-2,4diones according to the general formula (I) or agrochemically acceptable salts thereof, R3 'CH2)n G 0 x (CH 2)M- R (1 R 2 0'N 0 Y where X = C1-C4-alkyl, C1-C4-haloalkyl or C3-C-cycloalkyl; Y = Ci-C4-alkyl or C3-C6-cycloalkyl; n = 1, 2 or 3; m = 1 or 2; R1 = Ci-C-alkyl, or C 3-C6-cycloalkyl; R2 = hydrogen or methyl; R3 = Ci-C3 -alkoxy-C-C 3-alkyl, or a saturated five- or six-membered heterocycle with an oxygen or sulphur atom; G= hydrogen, a group L that can be cleaved off, or a cation E. The invention further relates to the use of the compounds according to the invention to control weeds and undesired grasses in cultures of useful plants.